在IDEA中配置Mybatis项目
作者：互联网
1. 创建一个简单的maven工程
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2. 在生成的pom.xml文件中导入mybatis需要的相关依赖
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pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>mybatis</artifactId>
<groupId>com.zjx</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>mybatis-01</artifactId>
<properties>
<maven.compiler.source>16</maven.compiler.source>
<maven.compiler.target>16</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.7</version>
</dependency>
<!--连接数据库所需要的jar包-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.26</version>
</dependency>
<!--测试单元-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!--
日志文件
https://mvnrepository.com/artifact/log4j/log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!--
简化实体类的初始化
https://mvnrepository.com/artifact/org.projectlombok/lombok -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.22</version>
<scope>provided</scope>
</dependency>
</dependencies>
<!--解决静态资源导出问题-->
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
</build>
</project>
依赖导入完毕后
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3.创建mybatis的核心配置文件
建议参考mybatis参考文档：mybatis中文参考文档
先看一下一个Mybatis工程长啥样
java下
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resource下
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官方文档的核心配置：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!--这里的内容基本不需要改，接下来是增加一些配置-->
<environments default="development">
<environment id="development">
<transactionManager type="JDBC"/>
<dataSource type="POOLED">
<!--这里是用来连接数据库的-->
<property name="driver" value="${driver}"/>
<property name="url" value="${url}"/>
<property name="username" value="${username}"/>
<property name="password" value="${password}"/>
</dataSource>
</environment>
</environments>
<!--每一个Mapper接口都要对应一个Mapper.xml文件映射-->
<mappers>
<mapper resource="org/mybatis/example/BlogMapper.xml"/>
</mappers>
</configuration>
给xml文件增加一些配置
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!--加载数据库连接的配置文件-->
<properties resource="jdbc.properties"/>
<!--日志设置-->
<settings>
<!--全局性地开启或关闭所有映射器配置文件中已配置的任何缓存-->
<setting name="cacheEnabled" value="true"/>
<!--标准的日志工厂的实现-->
<setting name="logImpl" value="LOG4J"/>
<!--是否开启驼峰命名自动映射-->
<setting name="mapUnderscoreToCamelCase" value="true"/>
</settings>
<!--配置别名-->
<typeAliases>
<!-- <typeAlias type="com.zjx.pojo.User" alias="User"/>-->
<package name="com.zjx.pojo"/>
</typeAliases>
<!-- 配置开发环境，可以配置多个，在具体用时再做切换 -->
<environments default="test">
<environment id="test">
<transactionManager type="JDBC"></transactionManager> <!-- 事务管理类型：JDBC、MANAGED -->
<dataSource type="POOLED"> <!-- 数据源类型：POOLED、UNPOOLED、JNDI -->
<property name="driver" value="${driver}" />
<property name="url" value="${url}" />
<property name="username" value="${username}" />
<property name="password" value="${password}" />
</dataSource>
</environment>
</environments>
<!-- 加载映射文件 mapper -->
<mappers>
<mapper resource="com/zjx/dao/UserMapper.xml"/>
<mapper resource="com/zjx/dao/TeacherMapper.xml"/>
<mapper resource="com/zjx/dao/BlogMapper.xml"/>
</mappers>
</configuration>
jdbc配置文件
driver=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://localhost:3306/xk?characterEncoding=utf-8
username=root
password=123456
log4j配置文件(不需要改，直接复制即可)
log4j.rootLogger = debug,console ,fileAppender,dailyRollingFile,ROLLING_FILE
log4j.logger.org.apache=dubug
log4j.logger.java.sql.Connection=dubug
log4j.logger.java.sql.Statement=dubug
log4j.logger.java.sql.PreparedStatement=dubug
log4j.logger.java.sql.ResultSet=dubug
log4j.appender.console = org.apache.log4j.ConsoleAppender
log4j.appender.console.Target = System.out
log4j.appender.console.layout = org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern = %d{ABSOLUTE} %5p %c{1}:%L - %m%n
log4j.appender.fileAppender = org.apache.log4j.FileAppender
log4j.appender.fileAppender.File = ./logs/mybatis.log
log4j.appender.fileAppender.Append = true
log4j.appender.fileAppender.Encoding = UTF-8
log4j.appender.fileAppender.Threshold = DEBUG
log4j.appender.fileAppender.layout = org.apache.log4j.PatternLayout
log4j.appender.fileAppender.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n
log4j.appender.dailyRollingFile = org.apache.log4j.DailyRollingFileAppender
log4j.appender.dailyRollingFile.File = ./logs/mybatis.log
log4j.appender.dailyRollingFile.Append = true
log4j.appender.dailyRollingFile.Encoding = UTF-8
log4j.appender.dailyRollingFile.Threshold = DEBUG
log4j.appender.dailyRollingFile.layout = org.apache.log4j.PatternLayout
log4j.appender.dailyRollingFile.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n
log4j.appender.systemFile.DatePattern = '.'yyyy-MM-dd
log4j.appender.systemFile.layout.ConversionPattern=[%5p] %d{dd-MM-yy HH:mm:ss} : %F %L : %m %n
log4j.appender.systemFile.File=./logs/mybatis.log
log4j.appender.ROLLING_FILE=org.apache.log4j.RollingFileAppender
log4j.appender.ROLLING_FILE.Threshold=ERROR
log4j.appender.ROLLING_FILE.File=rolling.log
log4j.appender.ROLLING_FILE.Append=true
log4j.appender.ROLLING_FILE.Encoding=UTF-8
log4j.appender.ROLLING_FILE.MaxFileSize=10KB
log4j.appender.ROLLING_FILE.MaxBackupIndex=1
log4j.appender.ROLLING_FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.ROLLING_FILE.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n
一个简单的接口对应的mapper.xml，文件所表示的信息建议参考文章开头的mybatis中文官方文档
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.zjx.dao.UserMapper">
<!--结果集映射-->
<resultMap id="UserMap" type="com.zjx.pojo.User">
<result column="userID" property="userID"/>
<result column="userName" property="userName"/>
<result column="balance" property="balance"/>
</resultMap>
<!--查询所有的信息-->
<select id="getAllUser" resultMap="UserMap">
select * from xk.user1;
</select>
<update id="updateByID" parameterType="com.zjx.pojo.User">
update user1 set userName = #{userName}, balance = #{balance} where userID = #{userID};
</update>
<delete id="deleteByID" parameterType="String">
delete from user1 where userID = #{id};
</delete>
<insert id="addUser" parameterType="com.zjx.pojo.User">
insert into user1(userID, userName, balance) values(#{userID}, #{userName}, #{balance});
</insert>
</mapper>
基本的配置情况就是这些
标签：配置,IDEA,log4j,mybatis,ROLLING,FILE,Mybatis,org,appender 来源： https://blog.csdn.net/star_zhang_jx/article/details/121081185